Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e5dea58c948a2662e826346bd09b211b81ce7b5bd005412d16e07482fe6c57e0' 
  AND token = '+ekqixA0lI4BnvLZGd4qQpNBc71KpCcZ+wPvVo3LU44=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}